There are a few drawbacks to using WordPress.com . One of them being, you have to use their “site stats” to see who visits your site. It doesn’t really give you a lot of information ,but for some people it is enough. I would love to put Google analytics on here but WordPress.com doesn’t allow it yet. I have been using another tracker from www.statcounter.com , they will give you information on the first 500 visitors for free, then it’s $5 per Month. And I’ve got to tell you this site is amazing. They will tell you what country, operating system, screen resolution, internet provider, what keywords people used to find your site, plus a whole lot more , and it’s very easy to read. Like I have said before, I don’t have any affiliation with sites I mention on this blog, other than the fact that I think they either have a useful product or just a cool site.
Statcounter shows you how to install their code on WordPress.com. It’s really simple and I think you will like it ,so give it a try . Have fun